Pulmonary nodule access devices and methods of using the same

ABSTRACT

A device for providing access to a nodule, lesion, or pathological area in a lung or other body organ or lumen. The device includes a sheath portion having a proximal end and a distal end and a plurality of stabilization wires. The sheath portion includes a primary lumen that extends from the proximal end to the distal end and a plurality of secondary lumens that extend from the proximal end to the distal end. The stabilization wires are configured to be slidably received within the secondary lumens. The length of the stabilization wires is greater than the length of the secondary lumens.

RELATED APPLICATION

This application is a Continuation-in-Part of U.S. application Ser. No.14/498,493 filed Sep. 26, 2014, which is a Continuation of Internationalapplication Ser. No. PCT/US2013/031077 filed Mar. 13, 2013 which claimspriority to U.S. Provisional Application Ser. No. 61/617,572 filed Mar.29, 2012.

BACKGROUND

Treatment or investigation of nodules, lesions, or pathological areas inthe lung often requires repeated access to the same region of the lung.In some cases, test to determine whether the nodule is benign ormalignant can take days or weeks and can require multiple biopsy samplesfrom the same nodule. Treatment of malignant nodules can require furtherrepeated access to treat the nodule. In cases where a nodule is locatedin the peripheral regions of the lung, navigation and access can bechallenging because the small diameters of the airways in the peripheralregions of the lung do not admit to visual navigation. There istherefore a need for a device and method to safely, quickly, andconsistently access the site of a nodule on a repeatable basis.

SUMMARY

In some embodiments, a device for providing access to a nodule, lesion,or pathological area in a lung or other body organ or lumen. The deviceincludes a sheath portion having a proximal end and a distal end and aplurality of stabilization wires. The sheath portion includes a primarylumen that extends from the proximal end to the distal end and aplurality of secondary lumens that extend from the proximal end to thedistal end. The stabilization wires are configured to be slidablyreceived within the secondary lumens. The length of the stabilizationwires is greater than the length of the secondary lumens.

In one aspect of the invention, the primary lumen includes a firstinterior dimension, the at least one of the secondary lumen includes asecond interior dimension. The first interior dimension is larger thanthe second interior dimension.

In another aspect of the invention, the primary and secondary lumensinclude central longitudinal axes. The central longitudinal axes of thesecond lumens are located further from a center axis of the sheathportion than the central longitudinal axis of the primary lumen.

In still another aspect of the invention, the device further includes astabilization wire control device that allows a user to controldeployment of the one or more of the stabilization wires at the distalend of the sheath portion. The stabilization wire control deviceincludes a handle portion configured to flexibly attach to proximal endsof the stabilization wires. The handle portion allows independentdeployment of two or more of the stabilization wires.

In yet another aspect of the invention, at least one of thestabilization wires is keyed within a respective one of the secondlumens.

In still yet another aspect of the invention, the stabilization wiresdeflect away from a center axis of the sheath portion. One or more ofthe stabilization wires includes a shape memory material.

Further features, advantages, and areas of applicability will becomeapparent from the description provided herein. It should be understoodthat the description and specific examples are intended for purposes ofillustration only and are not intended to limit the scope of the presentdisclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are for illustration purposes only and arenot intended to limit the scope of the present disclosure in any way.The components in the figures are not necessarily to scale, emphasisinstead being placed upon illustrating the principles of the invention.In the drawings:

FIG. 1 is a perspective view of a medical valve;

FIG. 2A is a view of a tool useful for repositioning or removing amedical device, which tool is shown in an opened configuration;

FIG. 2B is a view of the tool of FIG. 2A in a closed configuration;

FIG. 2C is a view of another tool with a removable portion in thedetached and opened configuration;

FIG. 2D is a view of the tool of FIG. 2C in the attached and closedconfiguration;

FIG. 3A is a view of another tool in an opened configuration;

FIG. 3B is a view of the tool of FIG. 3A in a closed configuration;

FIG. 3C is a view of the tool of FIG. 3A in a closed configurationgrabbing an off-axis device;

FIG. 4A is a perspective view of the tool of FIG. 3A in an openedconfiguration;

FIG. 4B is a perspective view of the tool of FIG. 3A in a closedconfiguration;

FIG. 5 is a view of a tool engaged with a valve loading tool;

FIG. 6 is a view of a tool having a flared distal end;

FIG. 7 is a view of a tool having a spiral flared distal end;

FIG. 8A is a distal end view of a multi-lumen tool having a plurality ofguide-wires;

FIG. 8B is a perspective view of the multi-lumen tool of FIG. 8A;

FIG. 8C is a view of the multi-lumen tool of FIG. 8A within an airway orother body lumen;

FIG. 8D is a view of an embodiment of the tool of FIG. 8A having distalanchors on the guide-wires;

FIG. 8E is a distal end view of an embodiment of the tool of FIG. 8Ahaving flat guide-wires;

FIG. 9 is a view of a tool deployed within an airway or other body lumenvia a working channel within an endoscope;

FIG. 10A is a view of a tool configured to be detachable from the distalend of an endoscope;

FIG. 10B is a view of the tool of FIG. 10A attached to the distal end ofan endoscope;

FIG. 10C is a view of the tool of FIG. 10A in an expanded configuration;

FIG. 10D is a view of the tool of FIG. 10A partially-engaged with amedical device;

FIG. 10E is a view of the tool of FIG. 10A having a medical deviceloaded therein;

FIG. 11 is a schematic cross-sectional view of an airway or body lumenand three types of nodules;

FIG. 12 is a side view of a distal end of a wire-based nodule accessdevice in a first configuration deployed within an airway or other bodylumen;

FIG. 13 is a side view of the distal end of the wire-based nodule accessdevice of FIG. 12 in a second configuration deployed within an airway orother body lumen;

FIG. 14 is a perspective x-ray view of a distal end of a wire-basednodule access device formed in accordance with an embodiment of thepresent invention;

FIG. 15 is a cross-sectional view of a distal end of a wire-based noduleaccess device formed in accordance with an embodiment of the presentinvention;

FIG. 16 is a cross-sectional view of a proximal end of a wire-basednodule access device formed in accordance with an embodiment of thepresent invention;

FIG. 17 is an end view of the proximal end of the wire-based noduleaccess device of FIG. 16;

FIG. 18 is an end view of a distal surface of a wire-based nodule accessdevice formed in accordance with an embodiment of the present invention;and

FIG. 19 is an end view of a distal surface of a wire-based nodule accessdevice formed in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION

Devices and methods for repositioning within, and/or removing medicaldevices from, a patient now will be described with reference to theaccompanying figures of one or more embodiments. The terminology used inthe description presented herein is not intended to be interpreted inany limited or restrictive manner. Rather, the terminology is simplybeing utilized in conjunction with a detailed description of theembodiments of the devices and methods. For example, although referenceis made to the removal and/or repositioning of medical valves within thebody, this disclosure is not necessarily limited to medical valves. Forinstance, embodiments of the present disclosure may be used to removeand/or reposition implantable medical devices or medical devicesaccessed via or useable within, passages, vessels, cavities, lumens orthe like (e.g., stents, plugs, ports, etc.). Furthermore, embodimentsmay comprise several novel features, no single one of which is solelyresponsible for its desirable attributes or is believed to be essentialto practicing the methods and devices described herein. Although someembodiments described herein refer to removing and/or repositioning amedical device deployed in an airway, this disclosure is not so limited.For example, disclosed devices and methods can be used to remove medicaldevices from other vessels, passages, cavities and lumens in humans andanimals. Additionally, in some embodiments, the removal and/orrepositioning device can comprise a plurality of components that can beconfigured to connect to and/or disconnect from each other.

Additionally, throughout the specification, claims, and drawings, theterm “proximal” means nearest the person or persons using the device,and “distal” means furthest from that person or those persons.

FIG. 1 illustrates an embodiment of a removable medical device 10. Insome embodiments, a removable medical device 10 can comprise a valveportion 20. In some embodiments, the valve portion 20 can connect to ahub 12. The valve portion 20 can have one or more struts 24 extendingfrom the hub 12. In some embodiments, the valve portion 20 has amembrane portion 22. The membrane portion 22 can be configured to extendacross the one or more struts 24. In some embodiments, the membraneportion 22 can extend across the outside (e.g., the side further from acentral axis of the medical device 10) of the one or more struts 24. Insome embodiments, the membrane portion 22 can extend across the insideof the one or more struts 24. In some embodiments, the ends of thestruts 24 opposite the hub 12 can include turned portions 26. In someembodiments, the turned portions 26 are turned toward the central axisof the medical device 10. In some embodiments, the turned portions 26are turned away from the central axis of the medical device 10.

In some embodiments, the removable medical device 10 can include acentral rod 14. The rod 14 can be positioned along the central axis ofthe medical device 10. The rod 14 can be configured to attach to the hub12. In some embodiments, the rod 14 extends in the same direction fromthe hub 12 as the valve portion 20. In some embodiments, the rod 14extends in a direction from the hub 12 opposite the valve portion 20. Insome embodiments, the rod 14 can have a cap 16 on the end of the rod 14opposite the hub 12. In some embodiments, the rod 14 and/or cap 16extend beyond the end of the valve portion 20 opposite the hub 12. Insome embodiments, the cap 16 has a larger diameter or cross-section thanthe removal rod 14.

As illustrated in FIG. 1, the removable medical device 10 can have ananchor portion 30. The anchor portion 30 can attach to the hub 12. Insome embodiments, the anchor portion 30 attaches to the portion of thehub 12 opposite the valve portion 20. In some embodiments, the anchorportion 30 is attached to the same portion of the hub as the valveportion 20. The anchor portion 30 can include one or more anchors 31.The one or more anchors 31 can attach to the hub 12. In someembodiments, the one or more anchors 31 attach to the portion of the hub12 opposite the valve portion 20. In some embodiments, the anchors 31attach to the same portion of the hub as the valve portion 20. In someembodiments, the anchors 31 include an anchor arm 32. In someembodiments, the anchors 31 include a piercing member 34 on the end ofthe anchors 31 opposite the hub 12. The piercing member 34 can beconfigured to penetrate the tissue of the walls in the region in whichthe medical device 10 is deployed. In some embodiments, the anchors 31include a pad 36 adjacent the piercing member 24 on the end of theanchors 31 opposite the hub 12. In some embodiments, the pad 36 canlimit the depth to which the piercing members 34 can penetrate tissue.

In some embodiments, the valve portion 20 can be configured totransition between a compressed configuration and an expandedconfiguration. For example, the struts 24 can be configured to compressinwardly toward the rod 14 upon the application of a compressing forceon the struts 24 and/or membrane portion 22. In some embodiments, thestruts 24 are biased to the expanded configuration. In some embodiments,the struts 24 are shape-set to the expanded configuration. In someembodiments, the struts 24 can be constructed of Nitinol or some othersuitable material.

In some embodiments, the anchoring portion 30 can be configured totransition between a compressed configuration and an expandedconfiguration. For example, the anchors 31 can be configured to bendinwardly and away from the hub 12 upon application of a compressingforce on the anchors 31. In some embodiments, the anchors 31 are biasedto the expanded configuration. In some embodiments, the anchors 31 areshape-set to the expanded configuration. In some embodiments, theanchors 31 can be constructed of Nitinol or some other suitablematerial.

FIGS. 2A and 2B illustrate an embodiment of an operative portion 60 of atool that can be used for removing and/or repositioning a medical device10. In some embodiments, the operative portion 60 can be configured totransition between an opened configuration (as illustrated in FIG. 2A)and a closed configuration (as illustrated in FIG. 2B). In someembodiments, the removal device 60 can include a proximal portion 62. Insome embodiments, the proximal portion 62 can be hollow. In someembodiments, at least a portion of the proximal portion 62 is solid. Insome embodiments, the proximal portion 62 can be constructed of a rigid,semi-rigid, or flexible material. In some embodiments, the proximalportion 62 can be constructed of the same material as the remainder ofthe operative portion 60 of the tool for removing and/or repositioning amedical device 10. In some configurations, the proximal portion 62 andthe operative portion 60 can be integrally formed or monolithic inconfiguration.

In some embodiments, the operative portion 60 can include one or moreengagement members 66. In some embodiments, the one or more engagementmembers 66 are attached to the distal end of the proximal portion 62.The one or more engagement members 66 can be configured to be moveabletoward one another. In some embodiments, movement of the one or moreengagement members 66 toward one another can transition the operativeportion 60 to the closed configuration. In some embodiments, movement ofthe one or more engagement members 66 away from one another cantransition the operative portion 60 to the opened configuration. In someembodiments, the one or more engagement members 66 can be biased to theopened configuration. In some embodiments, the operative portion 60 caninclude one or more indentations 63. In some embodiments, theindentations 63 can reduce the force required to transition the one ormore engagement members 66 between the opened configuration and theclosed configuration.

The one or more engagement members 66 can include an expanded portion 65connected to the distal end of the proximal portion 62. In someembodiments, the expanded portion 65 extends outwardly from the proximalportion 62 with respect to a central axis of the operative portion 60when the operative portion 60 is in the closed configuration. In someembodiments, the expanded portion 65 extends outwardly with respect tothe central axis of the operative portion 60 from a connection pointbetween the engagement members 66 and the proximal portion 62 when theoperative portion 60 is in the opened or closed configuration. In someembodiments, the connection between the engagement members 66 and theproximal portion 62 defines a proximal backstop 64 (e.g., when theproximal portion 62 comprises a solid part). In some embodiments, theengagement members 66 have a grasping portion 67. In some embodiments,the grasping portion 67 can be attached to the distal end of theexpanded portion 65. In some embodiments, the grasping portion 67 canextended inwardly with respect to the central axis of the operativeportion 60 from the expanded portion 65.

In some embodiments, the operative portion 60 includes distal tips 68 onthe ends of the engagement members 66. In some embodiments, the distaltips 68 of the engagement members can be connected to the distal ends ofthe grasping portions 67. In some embodiments, the distal tips 68 extendoutwardly from the grasping portions 67 with respect to the centralradius of the operative portion 60. In some embodiments, the distal tips68 define atraumatic structures such that any body structure can besomewhat protected during contact between the distal tips 68 and thebody structure. The distal tips 68 and/or other portions of theengagement members 66 can be configured to widen the body structure(e.g., a body lumen such as an airway) within which the engagementmembers 66 are transitioned to the opened configuration. For example,the engagement members 66 (or some portion thereof) can widen the bodylumen in which a device 10 is implanted. In some embodiments, wideningof the body lumen in which a device 10 is implanted can help todisengage the device 10 (or some portion thereof) from the walls of thebody lumen (e.g., help to disengage the device 10 from surroundinghyperplastic portions of the body lumen).

FIGS. 2C and 2D illustrate an embodiment of an operative portion 60′ ofa tool that can be used for removing and/or repositioning a foreign body(e.g. a medical device). Some numerical references to components inFIGS. 2C and 2D are the same or similar to those previously describedfor the operative portion 60 described above except that prime (′) hasbeen added. It is to be understood that the components can be the samein function or are similar in function to previously-describedcomponents. The operative portion 60′ of FIGS. 2C and 2D shows certainvariations to the operative portion 60 of FIGS. 2A and 2B.

In some embodiments, the engagement portions 66′ are removable from theproximal portion 62′. In some embodiments, the proximal portion 62′includes a groove 83. The proximal ends of the engagement portions 66′can be configured to connect with a band 81. The band 81 can beconstructed of nitinol or any other suitable material. In someembodiments, the band 81 can be configured to removably engage with thegroove 83. In some embodiments, the engagement members 66′ can beconstructed of nitinol or any other suitable material. In someembodiments, the engagement member 66′ and the band 81 form a unitarypart. In some embodiments, the engagement members 66′ can be biased inthe opened configuration.

FIGS. 3A-4B illustrate an embodiment of an operative portion 160 of atool that can be used for removing and/or repositioning a medical device10. In some embodiments, the operative portion 160 can be configured totransition between an opened configuration (as illustrated in FIG. 3A)and a closed configuration (as illustrated in FIG. 3B). In someembodiments, the operative portion 160 can include a proximal portion162. In some embodiments, the proximal portion 162 is hollow. In someembodiments, at least a portion of the proximal portion 162 is solid. Insome embodiments, the proximal portion 162 can be constructed of arigid, semi-rigid, or flexible material. In some embodiments, theproximal portion 162 can be constructed of the same material as theremainder of the operative portion 160 of the tool for removing and/orrepositioning a medical device 10. In some embodiments, the operativeportion 160 is formed from a tubular piece of material (e.g. Nitinol orsome other suitable material). In some configurations, the proximalportion 162 and the operative portion 160 can be monolithic inconfiguration or integrally formed.

In some embodiments, the operative portion 160 includes one or moreengagement members 166. The engagement members 166 can extend distallyfrom the proximal portion 162. In some embodiments, the engagementmembers 166 include expanded portions 165. The expanded portions 165 canextend outwardly away from a central axis of the operative portion 160when the operative portion 160 is in the opened or closed configuration.In some embodiments, the expanded portion 165 can extend in the distaldirection substantially parallel to the walls of the proximal portion162 when the operative portion 160 is in the closed configuration. Insome embodiments, the expanded portion 165 can extend inwardly towardthe central axis of the operative portion 160 when the operative portion160 is in the closed configuration.

In some embodiments, the engagement members 166 can include one or moregrasping portions 167. In some embodiments, the grasping portions 167extend inwardly from the engagement members 166 toward the central axisof the operative portion 160. In some embodiments, the grasping portions167 extend inwardly as well as in the proximal direction. In someembodiments, the grasping portions 167 extend inwardly as well as in thedistal direction. In some embodiments, the grasping portions 167 areformed by making two or more cuts in the engagement members 166 andbending the cut portion of the engagement members 166 inwardly towardthe central axis of the operative portion 160. In some embodiments, thegrasping portions 167 are formed by making at least two substantiallyparallel cuts in the engagement members 166 and flexing the cut portioninwardly toward the central axis of the operative portion 160. In someembodiments, the grasping portions 167 are formed by making at least twocuts in the engagement members 166, each cut extending to a distal end168 of the engagement members 166 such that the cut portion can befolded down toward the central axis of the operative portion 160 to formthe grasping portions 167. In some embodiments, the radial length ofeach of the grasping portions 167 is less than half the length of theinner diameter of the engagement members 166. In some embodiments, theradial length (e.g., the length substantially perpendicular to thecentral axis of the operative portion 160) of each of the graspingportions 167 is less than half the distance between the inner walls ofthe engagement members 166. In some embodiments, the total radial lengthof the one or more grasping portions 167 is less than the distancebetween the inner walls of the engagement members 166.

In some embodiments, the connection between the engagement members 166and the proximal portion 162 can form a back portion 164. In someembodiments, the distal ends 168 of the engagement members 166 can comeinto contact with each other when the operative portion 160 is in aclosed configuration. In some embodiments, the distal ends 168 of theengagement members 166 can have a semi-circular or curved shape (e.g.when viewed along the central axis of the operative portion 160). Insome embodiments, the distal ends 168 of the engagement members 166 canbe flat (e.g. when viewed along the central axis of the operativeportion 160). In some embodiments, the space formed between the backportion 164 and engagement members 166 can form substantially “teardrop” shaped space when the operative portion 160 is in a closedconfiguration, as illustrated in FIG. 3B.

In some embodiments, the operative portion 160 can include one or moreindentations 163. In some embodiments, the indentations 163 can belocated near the proximal ends of the engagement members 166. In someembodiments, a thickness of the indentations 163 in a directionsubstantially perpendicular to the central axis of the operative portion160 can be less than a thickness of the operative portion 160 distaland/or proximal of the indentations 163 in the direction substantiallyperpendicular to the central axis of the operative portion 160. Theindentations 163 can decrease the force required to transition theoperative portion 160 between the opened configuration and the closedconfiguration.

In some configurations, a method of removing and/or repositioning amedical device 10 from an airway or other body lumen can include thestep of grasping the medical device 10 using the operative portion 160of a tool for removing and/or repositioning a medical device 10. Forexample, with reference to FIGS. 3A-4B, the operative portion 160 of thetool for removing and/or repositioning a medical device 10 can beinclude a sleeve 40. In some embodiments, the sleeve 40 can be acatheter, the working channel of an endoscope, or any other suitablelumen, conduit, or tube. In some embodiments, the sleeve 40 includes asleeve lumen 42. In some embodiments, the sleeve 40 includes sleevewalls 44. In some embodiments, the total radial length of the one ormore grasping portion 167, the diameter of the rod 14 of the medicaldevice 10, and the wall thicknesses at the distal end of the two or moreengagement member 166 can be less the inner diameter of the sleeve 40.

In some embodiments, the sleeve 40 can be moved in the distal and/orproximal directions with respect to the operative portion 160. Asdescribed above, the engagement members 166 of the operative portion 160can be biased to the opened configuration. In some configurations, theengagement members 166 can be configured to transition to the closedconfiguration when the sleeve 40 moves over the distal ends 168 of theengagement members 166, as illustrated, for example, in FIGS. 3B and 4B.In some embodiments, the engagement members 166 can be configured totransition to the opened configuration when the distal end of the sleeve40 is moved from beyond the distal ends 168 of the engagement members166 to proximal of the engagement members 166. As explained above withreference to FIGS. 2A-2B, the engagement member 166 can be configured toexpand the body lumen in which the engagement members 166 aretransitioned to the opened configuration. In some embodiments, expansionof the body lumen by the engagement members 166 (or some portionthereof) can help to disengage a target device 10 (e.g., a device to beremoved) from adjacent portions of the body lumen (e.g., hyperplasticportions of the body lumen).

In some embodiments, the tool for removing and/or repositioning medicaldevices can include a stabilizing portion proximal of the proximalportion 162 of the operative portion 160. The stabilizing portion canallow the operative portion 160 to be held in place within the body ofthe patient while the sleeve 40 is moved in the proximal and/or distaldirections with respect to the operative portion 160. In someembodiments, the stabilizing portion can be a wire extending in theproximal direction from the proximal end of the proximal portion 162. Insome embodiments, the stabilizing portion can be a tube extending in theproximal direction from the proximal end of the proximal portion 162. Insome embodiments, the proximal portion 162 can be a unitary part withthe stabilizing portion. In some embodiments, the stabilizing portioncan allow the user of the operative portion 160 to move the operativeportion 160 in the distal and/or proximal directions with respect to thesleeve 40.

With reference to FIGS. 3A and 4A, the operative portion 160 can bepositioned near the cap 16 on the end of the central rod 14 of a medicaldevice 10. In some embodiments, the sleeve 40 can be withdrawn from theoperative portion 160 in the proximal direction. The engagement members166 then can transition to the opened configuration. The operativeportion 160 then can be moved toward the central rod 14 of the medicaldevice 10 until the central rod 14 and/or cap 16 are positioned withinthe engagement members 166 such that the cap 16 is located proximal tothe grasping portions 167, as illustrated, for example, in FIGS. 3A and4A. The sleeve 40 then can be moved distally with respect to theoperative portion 160 so that the engagement members 166 transitiontoward the closed configuration, as illustrated, for example, in FIGS.3B and 4B.

In some embodiments, the grasping portions 167 can secure the cap 16within the operative portion 160 when the engagement members 166 aretransitioned to the closed configuration while the cap 16 is locatedproximal to the grasping portions 167. The operative portion 160 thencan be used to pull the medical device 10 in the proximal direction. Insome embodiments, the operative portion 160 can be configured to pushthe medical device 10 in the distal direction when the cap 16 is securedwithin the operative portion 160.

In some embodiments, the “tear drop” shaped space formed by the backportion 164 and engagement members 166 can make it easier for the userof the operative portion 160 to grasp a cap 16 on the end of a centralrod 14 in situations where the central axes of the medical device 10 andoperative portion 160 are not aligned with one another, as illustratedin FIG. 3C. In such a situation, the operative portion 160 can, in someembodiments, be used to pull the medical device 10 in the proximaldirection and/or push the medical device 10 in the distal direction.

Although a method of grasping a medical device 10 has been described inthe context of the embodiment of the operative portion 160 illustratedin FIGS. 3A-4B, the same general method can be performed using theembodiment of the operative portion 60 found in FIGS. 2A and 2B.

FIG. 5 illustrates a method of using the operative portion 60 of a toolfor removing and/or repositioning medical devices 10 to pull a medicaldevice 10 through the interior of a compressing device 90 into theinterior of the sleeve 40. In some embodiments, the compressing device90 can include a tapered portion 92. The tapered portion 92 can beconstructed from a flexible or semi-flexible material configured tostretch and/or bend when in contact with the medical device 10 and/orwith the walls of the body lumen in which the medical device 10 isimplanted. In some embodiments, the tapered portion 92 is constructedfrom a rigid or semi-rigid material. The operative portion 60 can beused to grasp the cap 16 on the end of the central rod 14 and pull thedevice 10 toward the sleeve 40. In some embodiments, the tapered portion92 can help transition the struts 24 and/or anchors 31 of the device 10from the expanded configuration to the compressed configuration as thedevice 10 is pulled toward the sleeve 40. Examples of tapering devicescan be found in U.S. Pat. Nos. 8,043,301 and 8,136,230, which are herebyincorporated by reference herein in their entireties.

In some embodiments, a tool for removing and/or repositioning medicaldevices 10 can include a compressing portion 46. In some embodiments,the compressing portion 46 is conical or frustoconical in shape, asillustrated in FIGS. 6 and 7. In some embodiments, the compressingportion 46 is fluted (e.g., the radius of the compressing portion 46increases at a decreasing rate toward the distal end of the compressingportion 46) or trumpeted (e.g., the radius of the compressing portion 46increases at an increasing rate toward the distal end of the compressingportion 46) in shape. In some embodiments, the compressing portion 46can have fluted portions, trumpeted portions, conical portions,frustoconical portions, or any combination thereof. In some embodiments,the compressing portion 46 is attached to the distal end of the sleeve40. The sleeve 40 can be delivered to site of the medical device 10 viaa working channel 82 of a deliver device 80 (e.g., a working channel ofa catheter, bronchoscope, endoscope, or other delivery device). In someembodiments, the compressing portion 46 is attached to a rod or wire 48.In some embodiments, the compressing portion 46 is attached to the wire48 via welding, adhesives, soldering, magnets, or some other suitablemethod of affixing the wire 48 to the compressing portion 46. In someembodiments, the compressing portion 46 can be moved in the distaland/or proximal direction with respect to the sleeve 40. In someembodiments, the compressing portion 46 can be moved in the distaland/or proximal direction with respect to the operative portion 60. Insome embodiments, the compressing portion 46 is fixed to the sleeve 40.In some embodiments, the compressing portion 46 is a unitary part withthe sleeve 40.

The compressing portion 46 can be constructed of a rigid, semi-rigid, orflexible material. In some embodiments, the compressing portion 46 isconstructed of the same material as the sleeve 40 and/or the operativeportion 60. In some embodiments, the compressing portion 46 isconstructed of Nitinol or some other shape memory material. Thecompressing portion 46 can be constructed of a series of overlappingspiraled panels, as illustrated in FIG. 7. In some embodiments, thecompressing portion 46 can be constructed of a single piece of material.In some embodiments, the compressing portion 46 can have a window cutinto to allow for visualization through the compressing portion 46.

In some embodiments, the compressing portion 46 can be configured totransition between a compressed configuration and an expandedconfiguration. In some embodiments, the compressing portion 46 isconfigured to transition from the compressed configuration to theexpanded configuration (e.g., as illustrated in FIG. 6) upon withdrawalof the delivery device 80 from the compressing portion 46. In someembodiments, the compressing portion 46 can be biased to the expandedconfiguration, as illustrated in FIGS. 6 and 7. For example, thecompressing portion 46 can be biased to the expanded configuration suchthat, as the distal end 84 of the delivery device 80 is withdrawn fromthe compressing portion 46, the compressing portion 46 expands withinthe airway 4 or other body lumen. In some embodiments, compressingportion 46 can be configured to transition to the compressedconfiguration when the compressing portion 46 is positioned within thesleeve 40 or some other lumen or conduit (e.g. the working channel of anendoscope). In some configurations, the compressing portion 46 can beconfigured to at least partially retract into the sleeve 40. In someembodiments, the compressing portion 46 can be configured to applyexpansive force upon and expand the tissue 6 of an airway 4 or otherbody lumen when the compressing portion 46 is in the expandedconfiguration.

In some embodiments, the tool for removing and/or repositioning medicaldevices can include a plurality of compression wires 146, as illustratedin FIGS. 8A and 8B. The compression wires 146 can be housed in one ormore secondary conduits 143 within a sleeve 140. In some embodiments,the number of compression wires 146 and/or corresponding secondaryconduits 143 used can match the number of struts 24 on the medicaldevice 10 to be removed/repositioned. In some embodiments, the number ofwires 146 and/or corresponding secondary conduits 143 used can be fewerthan the number of struts 24. In some embodiments, the number of wires146 and/or corresponding secondary conduits 143 can be more than thenumber of struts 24. In some embodiments, the compression wires 146 canbe configured to transition from a compressed configuration to anexpanded configuration upon extension of the wires 146 from thesecondary conduits 143. In some embodiments, the compression wires 146can be configured to transition from the expanded configuration to theclosed configuration upon the return of the wires 146 into the secondaryconduits 143. In some embodiments, the compression wires 146 can beconstructed of Nitinol or some other suitable material. In someembodiments, the compression wires 146 can include a stabilizing member.In some embodiments, the stabilizing member can have a circular orsemi-circular shape and can extend between each of the individualcompression wires 146 (e.g. on or more rings of material which connectone or more of the individual compression wires 146 to each other). Insome embodiments, the stabilizing member can limit movement of thecompression wires 146 in the tangential direction (e.g., tangential withrespect to the central axis of the sleeve 140) toward or away from eachother. In some configurations, the stabilizing member can form a loopthat somewhat controls a diameter to which the wires can expand.

In some embodiments, the wires 146 can include anchoring portions. Insome configurations, the anchoring portions can be formed on the distalends of the wires 146, as illustrated in FIG. 8D. In some embodiments,the anchoring portions of the wires 146 can include a piercing member147. In some embodiments, the piercing members 147 can be configured topenetrate the tissue 6 of an airway 4 or other body lumen when the wires146 are in the expanded configuration. In some embodiments, theanchoring points of the wires 146 can include pads 149. The pads 149 canbe configured to limit the depth to which the piercing members 147 canpenetrate the tissue 6.

The wires can have any desired cross-section. The cross-section can besubstantially uniform along the length of the wire or the cross-sectioncan vary. In some embodiments, a tool for removing and/or repositioninga medical device 10 can include a plurality of flat compression wires246. The flat wires 246 can be housed within a plurality of secondaryconduits 243 within a sleeve 240. The flat wires 246 can be configuredto transition from a compressed configuration to an expandedconfiguration upon extension of the flat wires 246 from the secondaryconduits 243. In some embodiments, the flat wires 246 can be configuredto transition from the expanded configuration to the compressedconfiguration upon the return of the flat wires 246 into the secondaryconduits 243.

A method of compressing a medical device 10 into a device to removeand/or reposition a medical device 10 can include the step of graspingthe cap 16 on the end of a rod 14 of the medical device 10, as describedabove. In some embodiments, the method can include transitioning thecompressing portion 46 to the expanded configuration, as illustrated inFIG. 6. The operative portion 60 then can be used to pull the medicaldevice 10 toward the compressing portion 46 or to hold the medicaldevice 10 stable while the compressing portion 46 is advanced toward themedical device 10. In some embodiments, the operative portion 60 can beused to hold the medical device 10 in place as the compressing portion46 is moved toward the medical device. As the medical device 10 isreceived into the compressing portion 46, the flared shape of thecompressing portion 46 can cause the medical device 10 to transition toa compressed configuration. For example, the struts 24 of the medicaldevice 10 can come into contact with the compressing portion 46 and canbe urged toward the central rod 14 of the medical device 10. Compressionof the struts 24 can cause the valve portion 20 of the medical device 10transition to the compressed configuration. In some embodiments, theanchors 31 of the medical device 10 can be configured such that thepiercing members 34 of the anchors 31 disengage from the tissue 6 as aresult of the bending of the anchors 31 when the medical device 10 ispulled in the proximal direction.

In some embodiments, the operative portion 60 can continue to pull themedical device 10 toward the sleeve 40 such that the anchors 31 arebrought into contact with the compressing portion 46. In someembodiments, the operative portion 60 can continue to hold the medicaldevice 10 stable while the compressing portion 46 is advanced furthertoward the medical device 10. In some embodiments, the compressingportion 46 is configured to compress the anchors 31 to a compressedposition as the anchors 31 travel through the compressing portion 46toward the sleeve 40. In some embodiments, the entire medical device 10can be transitioned into the sleeve 40 prior to the medical device 10being removed and/or repositioned. In some embodiments, at least or onlya portion of the medical device 10 can be transitioned into the sleeve40. In some embodiments, the medical device 10 is not transitioned intothe sleeve 40 as the medical device 10 is removed and/or repositioned.In some embodiments, the anchors 31 can be captured and/or covered bythe tool such that, as the captured device 10 is moved within the body,the tool can reduce the likelihood that the anchors 31 or other portionsof the medical device 10 could damage tissue within the body of thepatient (e.g., the vocal chords, airways, trachea, or other body parts).

In some embodiments, the tool for repositioning and/or removing medicaldevices 10 can be moved within the body after the medical device 10 isremoved from a first position. In some embodiments, the tool can be usedto move the medical device 10 to a second location within the body. Insuch embodiments, the operative portion 60, compressing portion 46and/or sleeve 40 can be moved to the second location in the body. Insome embodiments, the sleeve 40 and/or the compressing portion 46 caninclude visual and/or radiopaque markings. The markings can bevisualized using a camera within the delivery device, fluoroscopy,and/or any other visualization known by those skilled in the art. Themarkings can provide visual and/or fluoroscopic verification of theposition of the tool and/or the position of the compressed medicaldevice 10 within the tool. In some embodiments, a user of the tool canposition the tool in the second location using the markings as a guide.The markings can include one or more colored bands, pigmented bands,metallic bands, translucent portions, and/or any other appropriate meansor structure for allowing the user to visualize the location of the tooland/or the medical device 10. In some embodiments, the markings arelocated on the distal end of the sleeve 40 and/or the compressingportion 46. In some embodiments, the markings identify the location of aspecific portion (e.g., the hub, proximal end of the struts, distal endof the anchors, etc.) of the medical device 10 within the sleeve 40.

Once positioned in the second location, the sleeve 40 and/or compressingportion 46 of the device can be withdrawn from (e.g. moved proximallywith respect to) the operative portion 60. In some embodiments, as thesleeve 40 and/or compressing portions 46 are withdrawn from theoperative portion 60 and/or medical device 10, the medical device 10 isconfigured to transition to an expanded configuration at the secondlocation. In some embodiments, withdrawal of the sleeve 40 from theoperative portion 60 can allow the engagement members 66 to transitionto the opened configuration and can allow the grasping portions 67 todisengage from the medical device 10. In this manner, a medical device10 can be deployed in a second location within the body.

Although the method of compressing and removing/repositioning a medicaldevice 10 has been described with respect to the embodiment of thedevice illustrated in FIG. 6, the method can be similarly implementedusing the embodiments of the device found in FIGS. 7-8E. For example,the compression wires 146 can be used to compress the valve portion 20of the medical device 10 as the operative portion 60 pulls the medicaldevice toward the sleeve 146. In some embodiments, the compression wires146 can engage with the membrane portions 22 between the struts 24. Insome embodiments, the compression wires 146 can penetrate built uptissue (e.g., hyperplasia) surrounding the valve portion 20 and can helpremove the valve portion 20 of the medical device 10 from the walls ofan airway 4 or other body lumen. In some embodiments, the anchorportions on the ends of the compression wires 146 can help hold thecompression wires 146 in place as the valve portion 20 is compressed andcan help reduce deflection of the compression wires 146 as the medicaldevice 10 is pulled toward the sleeve 140. In some embodiments, theanchor portions on the ends of the compression wires 146 can beconfigured to release from the tissue 6 of the airway 4 when thecompression wires 146 are pushed in the distal direction. In someembodiments, the anchor portions on the ends of the compression wires146 can be configured to release from the tissue 6 of the airway 4 whenthe compression wires 146 are pulled in the proximal direction. In someembodiments, using flat compression wires 246 can help reduce thelikelihood that the wires 246 will rotate with respect to the centralaxis of the operative portion 60, 160 and/or the central axes of therespective secondary conduits 243 as the medical device 10 is pulledtoward the sleeve 240. In some embodiments, contact between the distalend of the sleeve 40, 140, 240 and the anchors 31 of the medical device10 can cause the anchors 31 to transition to a compressed configuration.

FIG. 9 illustrates an embodiment of the tool for removing and/orrepositioning medical devices configured for use in an endoscope 50 orother delivery device. In some embodiments, the tool can be positionedwithin a working channel 54 of the endoscope 50. In some embodiments,the endoscope 50 or other delivery device can be used to navigate thetool through the patient's body to the site of a target medical device10. The endoscope 50 can be guided from outside of the patient's bodyinto an airway 4 of other body lumen. In some embodiments, a lock 70 canbe used to hold portions (e.g., the operative portion 60, sleeve 40,and/or compressing portion 46) of the tool static with respect to thepatient's body, the endoscope 50, and/or the other portions of the tool.In some embodiments, the lock 70 can be partially or completely releasedto allow for controlled movement of the portions of the tool withrespect to one another (e.g., moving the sleeve in the distal and/orproximal direction with respect to the operative portion 60). Theendoscope 50 can include a handle portion 52. In some embodiments, thehandle portion 52 includes one or more controls or other user inputs(e.g., light controls, articulation controls, a vacuum control).

FIGS. 10A-10E illustrate an embodiment of a tool for repositioningand/or removing a medical device. The tool can include a capture portion340. The capture portion 340 can include a body portion 342 with aproximal end 345. The proximal end 345 of the capture portion 340 can beconfigured to removably connect with the distal end of an endoscope 50or other delivery device via the use of an adhesive, friction fitting,threading, magnets, or any other suitable method of adhering. Thecapture portion 340 can include one or more compression members 346. Thecompression members 346 can include hinge portions 343 where thecompression members 346 connect to the body portion 342 of the captureportion 340. In some embodiments, capture portion 340 can include asingle compression member 346. In some embodiments, the compressionmember 346 can have a conical shape, a fluted shape, a trumpeted shape,or any combination thereof. In some embodiments, the compression member346 can be constructed of a single piece of material. In someembodiments, the compression member 346 can be constructed ofoverlapping panels of material. In some embodiments, the compressionmember 346 can be constructed of a plurality of wires. In someembodiments, the compression member 346 can be constructed of aplurality of woven wires.

In some embodiments, the compression members 346 can be configured totransition between an expanded configuration (as illustrated in FIG.10C) and a compressed configuration (as illustrated in FIG. 10B) bymoving about the hinge portions 343. In some embodiments, the one ormore compression members 346 can be fixed in the expanded configuration.In some embodiments, the compression members 346 can be biased to thecompressed configuration. In some embodiments, the compression members346 can be biased to the expanded configuration. In some embodiments,the compression members 346 can be constructed of Nitinol or some othersuitable material. In some embodiments, the compression members 346 canbe transitioned to the expanded configuration by rotating a central ring347 of the capture portion 240. The central ring 347 can be configuredto rotate about an axis of rotation normal to or otherwise off axis fromthe central axis of the capture portion 340. In some embodiments,rotation of the central ring 347 can exert force on the interior of thecompression members 346 such that the compression members transition tothe expanded configuration. For example, the central ring 347 can beelliptical in shape such that a major diameter of the central ring 347causes the ring 347 to come into contact with the compression members346 when the central ring 347 is rotated toward coaxial (with respect tothe central axis of the capture portion 340) alignment with the captureportion 340.

In some embodiments, each of the compression members 346 can include oneor more internal lumens in communication with one or more internallumens in the body portion 342. The one or more internal lumens canhouse a plurality of actuating wires. The actuating wires can have abent shape such that, as the wires are extended from the body portion342 into the lumens of the compression members 346, the wires can exerta radially-outward force on the compression members 346. In someembodiments, such a radially-outward force can cause the compressionmembers 346 to transition from the compressed configuration to theexpanded configuration. In some embodiments, the one or more internallumens can house a plurality of actuating rods. In some embodiments, theactuating rods are straight. The actuating rods can be configured toextend and retract from the internal lumens of the body portion 342 intoand out of the internal lumens of the compression members 346. In someembodiments, where the compression members 346 are biased to theexpanded configuration, insertion of the actuating rods into theinternal lumens of the compression members 346 can cause the compressionmembers 346 to transition from the expanded configuration to thecompressed configuration.

In some embodiments, the capture portion 340 can include an operativeportion 160. In some embodiments, the operative portion 160 of thecapture portion 340 is the same as or similar in both function andstructure to the operative portion 160 described above. In someembodiments, the operative portion 160 of the capture portion 340 is thesame as or similar in both function and structure to the operativeportion 60 described above. In some embodiments, the operative portion160 can be housed within a working channel of the endoscope 50. In someembodiments, the operative portion 160 can be housed within the captureportion 340.

A method of using the tool illustrated in FIGS. 10A-10E to remove and/orreposition a foreign body (e.g., a medical device 10) can includeattaching the proximal end 345 of the capture portion 340 to the distalend of the endoscope 50, as illustrated in FIG. 10A. In someembodiments, the method then can include guiding the capture portion 340to the site of a medical valve 10, as illustrated in FIG. 10B. In someembodiments, the method can include expanding the compression members346 to the expanded configuration via rotation of the central ring 347or through application of other forces upon the compression members 346.In some embodiments, expansion of the compression members 346 can expandthe tissue in the vicinity of the capture portion 340. Expansion of thetissue in the vicinity of the capture portion 340 can help to disengagethe medical valve 10 from the surrounding tissue (e.g., disengagehyperplastic tissue from the medical valve 10). In some embodiments, theone or more compression members 346 can be fixed in the expandedconfiguration.

In some embodiments, the method can further include using the operativeportion 160 of the capture portion 340 to grab the cap 16 of the medicaldevice 10 in a manner similar to that described above. The operativeportion 160 then can be used to pull the medical device 10 in theproximal direction toward the endoscope 50, as illustrated in FIG. 10D.In some embodiments, the operative portion 160 can be used to hold themedical device 10 stable as the capture portion 340 is transitionedtoward the medical device 10. As the medical device 10 is approaches theendoscope 50, the struts 24 and/or membrane portion 22 of the medicaldevice 10 can come into contact with the compression members 346. Suchcontact, as the medical device 10 is pulled toward the endoscope 50, cancause the valve portion 20 to transition to a compressed configuration.In some embodiments, the medical device 10 can be pulled in the proximaldirection such that the anchors 31 come into contact with thecompression members 346. Such contact can facilitate transition of theanchors 31 from the expanded configuration to the compressedconfiguration. In some embodiments, the entirety of the medical device10 can be pulled into the capture portion 340. In some embodiments, thecompression members 346 then can be transitioned to a compressedconfiguration, as illustrated in FIG. 10E. In some embodiments, the oneor more compression members 346 can remain in the expandedconfiguration. In some embodiments, the endoscope 50 then can be used toremove the capture portion 340 and medical device 10 from the patient.

In some embodiments, the endoscope 50 can be used to navigate thecapture portion 340 and medical device 10 to another location within thepatient's body. In some embodiments, the compression members 346 thencan be transitioned to the expanded configuration. The operative portion160 then can be used to push the medical device 10 in the distaldirection out from the capture portion 340. In some embodiments, thecompression members 346 can be moved in the proximal direction withrespect to the operative portion 160. The medical device 10 then cantransition to an expanded configuration and can engage with the tissuesurrounding the medical device 10. The operative portion 160 then can betransitioned to the opened configuration to release the medical device10 from the tool for removing and/or repositioning medical devices. Insome embodiments, the endoscope 50 then can be used to navigate thecapture portion 340 out of the patient's body.

Although the tool for removing and/or repositioning medical devices hasbeen disclosed in the context of certain embodiments and examples, thoseskilled in the art will understand that the present disclosure extendsbeyond the specifically disclosed embodiments to other alternativeembodiments and/or uses of the tool and obvious modifications andequivalents thereof. In addition, while several variations of the toolhave been shown and described in detail, other modifications, which arewithin the scope of this disclosure, will be readily apparent to thoseof skill in the art. It is also contemplated that various combinationsor sub-combinations of the specific features and aspects of theembodiments may be made and still fall within the scope of thisdisclosure. It should be understood that various features and aspects ofthe disclosed embodiments can be combined with, or substituted for, oneanother in order to form varying modes or embodiments of the tool. Thus,it is intended that the scope of the present disclosure should not belimited by the particular disclosed embodiments described above.

The device shown in FIGS. 8A-E can be modified to provide repeatableaccess to nodules, lesions, or pathological areas in the lung or otherbodily organ. The terminology used in the description presented hereinis not intended to be interpreted in any limited or restrictive manner.Rather, the terminology is simply being utilized in conjunction with adetailed description of embodiments of the devices and methods. Forexample, the term “nodule” can refer to lesions, tumors, or otherpathologies within the body, independent of size and shape.

Some or all of the following embodiments herein disclosed can beutilized to provide repeatable access to a nodule or other site ofinterest for sampling, taking biopsies, or otherwise diagnosing the siteof interest. Furthermore, some or all of the embodiments can be used toprovide repeatable access to a site of interest for the purpose ofproviding treatment to the site of interest. For example, theembodiments herein may be utilized to provide repeatable access to thesite(s) of interest for the purpose of administering medicants (e.g.,chemotherapy) and/or administering energy and/or therapeutic seeds tothe site of interest. Tools for draining infections (e.g., loculatedinfections) and/or bullae, providing antibiotics, and/or for introducingsealants to a site of interest can be used with some or all of theembodiments described herein.

Furthermore, embodiments may include several novel features, no singleone of which is solely responsible for its desirable attributes or isbelieved to be essential to practicing the inventions herein described.Although some embodiments described herein refer to deploying an accessdevice into an airway, this disclosure is not so limited, and deploymentcould be made, for example but without limitation, into other vessels,passages, and body cavities in humans and animals. Additionally, theembodiments described herein could be configured to be removable orpermanent, depending on the purpose behind deploying the givenembodiment in a given procedure. In some embodiments, the device caninclude a plurality of components which can be configured to connect toand/or disconnect from each other (e.g. proximal, central, and distalcomponents). In such embodiments, the device can be configured to becompletely (e.g. all components) removable and/or partially removable(e.g. some components). Some embodiments of the device can be completelypermanent (e.g. all components permanently deployed) and/or partiallypermanent (e.g. some components removable). Some of the embodimentsdescribed herein can be used in conjunction with a number of treatmentand/or diagnosis instruments (e.g. cytology brushes, RF probes,ultrasound probes, biopsy forceps, TBNA needles, etc.). Each of theembodiments described herein could include radiopaque markings or othervisualization aids (e.g. markings compatible with x-ray, CT and/orbronchoscopic visualization) to assist a care provider in navigating,deploying, and/or locating the device. Some of the embodiments describedherein can include laser cut patterns, side passageways, or otherfeatures detectable by an ultrasound probe or other visualizationdevice.

FIG. 11 illustrates an airway 420 having a number of nodules therein. Ingeneral, nodules can be grouped into three or more types. For example,nodules located outside of an airway passage are generally referred toas extrinsic nodules 430. Nodules that span an airway wall 424 generallyare referred to as mixed nodules 432. Nodules that are located within anairway 420 are generally referred to as intrinsic nodules 434. Each typeof nodule presents its own challenges for access and treatment.Desirably, consistent and repeated access to any particular siteproximate a nodule can be accomplished using one or more of the devicesdescribed herein. Advantageously, one or more of the devices describedherein can be directly anchored proximate or at a region containing asite of interest such that the device will move with the site. Forexample, by anchoring to the tissue, airway, or other portion of thebody that is adjacent to or that contains the region of interest, as thepatient or recipient breaths or has other anatomical movement, one ormore of the devices described herein will move with the region ofinterest. This provides distinct advantages over catheters, lumens andthe like that provide a frame of reference to a location external to thebody or the location of interest, for example. Such catheters, lumensand the like have a distal end that does not move with movement of theregion of interest. For example, if the patient is breathing, relativemovement between the lung tissue and the end of a catheter, bronchoscopeor the like will occur with each breath. In some configurations, thedevices or at least some portion of the devices described herein canfunction as fiducial markers. In some arrangements, more than two of thedevices or more than two portions of one or more devices can be used todefine a plane. Thus, the devices, or portions of the devices, can beused to locate nodules, or other sites of interest, visually or throughother suitable techniques.

The present invention includes an anchoring feature(s) in a guide sheathto ensure that the guide sheath does not lose its location within theairway. The anchoring feature(s) can be activated manually by the useror triggered automatically by an instrument used in the working channel.The anchoring feature(s) will provide temporary, reversible anchoringfor the distal tip of the guide sheath within the targeted airway.

As shown below, the present invention is an “end product” assembly of aguide sheath and anchoring system which can be used to temporarilymaintain the position and orientation of the guide sheath tip. Theinternal diameter of the guide sheath allows instruments (needles,forceps, brushes, etc.) to pass through the sheath to reach the airwaytarget. In one embodiment, the sheath contains additional workingchannels to allow control wires to transmit force from the proximalhandle to the distal tip in order to engage anchor prongs. These wiredprongs could be made of nitinol wire in either the superelastic or shapememory condition, or could be pre-formed from spring steel. There couldbe a number of wires spaced around the central working channel invarious arrays of shapes.

FIG. 12 illustrates an embodiment of an access device 440 that can, insome embodiments, span one or more generations of the bronchial tree.The access device 440 includes a proximal end (not shown) and a distalend. In some embodiments, the access device 440 includes a channel bodyportion 450. In some embodiments, a portion or all of the channel bodyportion 450 is substantially cylindrical or may have a polygonalcross-section. In some embodiments, the channel body portion 450 can beconstructed of a PTFE-lined braid of reinforced PEBAX™ or some othersuitable material.

In one embodiment, the channel body portion 450 includes a proximal endand a distal end. The channel body portion 450 includes an interiorworking channel 456. In some embodiments, the interior working channel456 extends from the proximal end to the distal end. In someembodiments, the diameter of the working channel 456 is greater thanabout 1 mm and/or less than about 5 mm. In some embodiments, thediameter of the working channel 456 is approximately 2 mm. In someembodiments, when the channel body portion 450 is inserted into a bodylumen, the proximal end remains exterior to the body.

In some embodiments, the access device 440 can include one or moreanchor channels 460 that slidably receive anchors 468. The one or moreanchor channels 460 extend from the proximal to the distal end of thechannel body portion 450. The anchors 468 include a tissue piercingdistal end and a proximal end accessible by an operator at the proximalend of the channel body portion 450. The anchors 468 may include pads,such as the pads 149 shown in FIG. 8D.

In one embodiment, the operator inserts the channel body portion 450into a body lumen with the anchors 468 retracted within their respectiveanchor channels 460. The channel body portion 450 is advanced until thedistal end of the channel body portion 450 reaches a desired location.Once the channel body portion 450 has reached the desired location, theoperator advances the anchors 468, individually or simultaneously. Asthe anchors 468 exit the distal end of the channel body portion 450, theanchors 468 expand away from a longitudinal axis of the channel bodyportion 450. The anchors 468 are advanced until the tissue piercing tipspenetrate walls of the lumen. After the anchors 468 are secured to thelumen walls, the proximal ends of the anchors 468 may be secured to thechannel body portion 450, such as a handle device (not shown) at theproximal end. The anchors 468 keep the channel body portion 450 in placewithin the body lumen, thus allowing the operator to pass variousmedical devices (e.g., a needle 458) through the working channel 456 inorder to interact with targets (e.g., nodules 430-434) at or near thedistal end of the channel body portion 450.

In some embodiments, the body portion 450 of the access device 440 canbe constructed of a stainless steel or nitinol hypotube or some otherresilient material. The body portion 450 of the access device 440 can becut using a laser, photochemical mill, water jet or other suitableprocess. In some configurations, the body portion 450, or a segmentthereof can be cut in a braided pattern, a jigsaw pattern, a stop cutpattern and/or a serpentine pattern. Cutting the body portion 450 canincrease the flexibility of the access device 440 and allow the accessdevice 440 to more easily navigate tortuous airways or other bodylumens. In some embodiments, the proximal end of the body portion 450 iscut to have increased flexibility. In some embodiments, cuts in the bodyportion 450 can be sealed with heat shrink protect the interior of theworking channel 456. In some embodiments, PTFE, PEBAX™, or some othersuitable material can be used to coat the interior of the workingchannel 456 and/or the exterior of the body portion 450. In someconfigurations, the body portion 450 is not cut.

In some embodiments, the access device 440 is deployed at a site ofinterest (e.g., a nodule) using a bronchoscope of other delivery device(e.g., an endoscope or delivery catheter). The access device 440 can bestored in a working channel or other lumen of a delivery device beforedeployment. In some embodiments, the access device 440 is configured toradially compress into the working channel or other lumen of a deliverydevice.

The access device 440 can navigate to the site of interest using avisualization device, such as, for example, an ultrasound probe orscope. The visualization device is included in the scope (e.g., fiberoptic device) or can be sized and shaped to fit within the workingchannel or other lumen in which the access device 440 is stored prior todeployment. In some embodiments, the visualization device is sized andshaped to fit within (e.g., able to pass through) the access device 440when the access device 440 is contained within the lumen of the deliverydevice. The access device 440 and/or lumen can be filled with a gel orother fluid to facilitate measuring continuity of the visualizationdevice (e.g., ultrasound continuity of an ultrasonic probe).

The visualization device can be used to identify the specific location(e.g., the radial and/or circumferential location with respect to thedelivery device) of the site of interest (e.g., nodule) near which theaccess device 440 is to be deployed. In some embodiments, thevisualization device is configured to detect surface and/or structuralfeatures (e.g., echogenically unique features) of the access device 440.Such echogenically unique surface and/or structural features couldinclude features that have different echogenicity from the portions ofthe access device 440 adjacent to or surrounding the features. In somesuch embodiments, the visualization device (e.g., ultrasound probe) canbe used to detect the rotational orientation of the one or more anchors468 (or other features such as, for example, cut patterns, side ports)of the access device 440. The access device 440 can be rotated withinthe lumen of the delivery device to rotationally align the relevantfeature (e.g., the anchors 468, cut patterns, side ports) to a desiredrotational position. For example, the anchor 468 can be aligned on thecircumferentially opposite side of the lumen into which the accessdevice 440 is deployed from the site of interest (e.g., a nodule).

In one embodiment, based on different deployments of the anchor 468, thedistal end of the access device 440 can be directed toward the site ofinterest. FIG. 13 illustrates the access device 440 with a normal vectorof its distal face skewed at an angle away from a longitudinal axis ofthe lumen in which the access device 440 is located. In order for theaccess device 440 to maintain this skewed orientation, at least a firstone of the anchors 468 is deployed at a shorter length than a second oneof the anchors 468. The access device 440 may also be skewed based onthe location where the ends of the anchors 468 make contact with thewall of the lumen. For example, a first one of the anchors 468 makescontact with the lumen wall at a location more proximal than otheranchors 468. A combination of the methods described above may be usedfor altering the orientation of the distal end of the access device 440.

FIG. 14 illustrates a perspective x-ray view of a distal end of theaccess device 440. In this embodiment, the access device 440 includesthe main center working channel 456 and four anchor channels 460.

As shown in FIG. 15, the anchors 468 are slidable within the anchorchannels 460 to achieve various exposed or non-exposed positions. Theanchors 468 may be mostly straight when they are within the anchorchannels 460, but could deflect outward when deployed for making contactwith tissue. The outward deflection may be achieved through a shapesetting process used on the anchors 468 which is made of a shape setmaterial or the anchors 468 may be configured in a preloaded shape.

FIG. 16 shows a side cross-sectional view of a proximal end (i.e.,handles) of the access device 440. The proximal end of the access device440 is located outside of the patient when in use. In one embodiment,the proximal end of the access device 440 includes an anchor handleactuator 500 (i.e., a stabilization wire control device), an anchorhandle base 470 and a main handle 480. The anchor handle actuator 500 isattached to the proximal ends of one or more of the anchors 468. Theproximal ends of the anchors 468 may be attached via adhesive orfasteners or friction fitted into cavities within the anchor handleactuator 500. The anchor handle actuator 500 keeps the anchors 468 fromrotating within their respective anchor channel 460. Other methods ofconnecting the anchors 468 to the anchor handle actuator 500 may beused. A user controls positioning of the distal end of the access device440 based on how they manipulate the anchor handle actuator 500.Movement of the anchor handle actuator 500 toward either the bodyportion 450 of the access device 440 or a handle component (not shown)of the access device 440 results in the anchors 468 moving distallyeventually protruding from the distal end of the body portion 450.

In one embodiment, the anchor handle base 470 connects to a proximal endof the anchor handle actuator 500 via a Luer fitting or comparableconnecting device(s). The anchor handle base 470 includes a lumen foreach of the shafts of the anchors 468. The lumen in the anchor handlebase 470 allow the anchors 468 to move longitudinally. In oneembodiment, the anchor handle base 470 is not included.

In one embodiment, the proximal end of the anchors 468 are pivotallyattached to the anchor handle actuator 500. This configuration allowsone to be able to push one or more of the anchors 468 out of the distalend of the access device 440 without significantly changing the positionof the other anchors 468. This allow one to manipulate orientation ofthe distal end of the access device 440, like that shown in FIG. 13,based on length of anchors exposed and/or where/when to deploy an anchor468. FIG. 17 shows a proximal face of the anchor handle actuator 500that is connected to the proximal ends of four anchors 468. The proximalends of the anchors 468 are attached to the anchor handle actuator 500such that the anchors 468 are unable to significantly rotate within theanchor channels 460. This configuration keys the anchors 468 so thatthey deploy consistently at the distal end of the device.

In one embodiment, the anchor handle actuator 500 includes multiple,separately controllable components. Each of the separately controllablecomponents is connected to one of the anchors 468. This allows a user todeploy one of the anchors 468 without affecting position of the otheranchors 468.

FIG. 18 illustrates an anchor device that includes three anchor channels460 and FIG. 19 illustrates an anchor device that includes two anchorchannels 460.

EMBODIMENTS

A. A device for providing access to a nodule, lesion, or pathologicalarea in a lung or other body organ or lumen, the device comprising: asheath portion, the sheath portion having a proximal end and a distalend, the sheath portion comprising: a primary lumen 142 that extendsfrom the proximal end to the distal end; and a plurality of secondarylumens 143 that extend from the proximal end to the distal end; and aplurality of stabilization wires, wherein at least one of thestabilization wires is configured to be slidably received within one ofthe secondary lumens, wherein the length of the stabilization wires isgreater than the length of the secondary lumens.

B. The device of A, wherein the primary lumen comprises a first interiordimension, wherein the at least one of the secondary lumen comprises asecond interior dimension, wherein the first interior dimension islarger than the second interior dimension.

C. The device of A or B, wherein the primary and secondary lumensinclude central longitudinal axes, wherein the central longitudinal axesof the second lumens are located further from a central longitudinalaxis of the sheath portion than the central longitudinal axis of theprimary lumen.

D. The device of any of A-C, further comprising a stabilization wirecontrol device configured to allow a user to control deployment of theone or more of the stabilization wires at the distal end of the sheathportion.

E. The device of D, wherein the stabilization wire control devicecomprises a handle portion configured to flexibly attach to proximalends of the stabilization wires.

F. The device of E, wherein the handle portion is configured to allowindependent deployment of one or more of the stabilization wires.

G. The device of any of A-F, wherein at least one of the stabilizationwires is keyed to a predefined orientation within a respective one ofthe second lumens.

H. The device of any of A-G, wherein the stabilization wires areconfigured to deflect away from a center axis of the sheath portion.

I. The device of any of A-H, wherein at least a portion of one or moreof the stabilization wires comprises a shape memory material.

J. The device of any of A-I, wherein one or more of the stabilizationwires comprises a piercing tip.

K. A method comprising: navigating a delivery device to a desiredlocation with a lumen of a body; deploying a plurality of stabilizationwires from a plurality of channels of the delivery device; attaching thestabilization wires to tissue proximate a target nodule; securing thestabilization wires relative to the delivery device; passing a treatmentor diagnosis instrument through a central working channel of thedelivery device; and treating or collecting a sample from the targetnodule.

L. The method of K, further comprising: unsecuring the stabilizationwires from the delivery device; detaching the stabilization wires fromthe tissue proximate the target nodule; and returning the plurality ofstabilization wires to the plurality of channels of the delivery device.

M. The method of any of K or L, wherein the central working channelcomprises a first interior dimension, wherein the at least one of theplurality of channels comprises a second interior dimension, wherein thefirst interior dimension is larger than the second interior dimension.

N. The method of any of K-M, wherein the central working channel and theplurality of channels include central longitudinal axes, wherein thecentral longitudinal axes of the plurality of channels are locatedfurther from a center axis of the delivery device than the centrallongitudinal axis of the central working channel.

O. The method of any of K-N, wherein deploying the stabilization wirescomprises activating a stabilization wire control device configured toallow a user to control deployment of the one or more of thestabilization wires at a distal end of the delivery device.

P. The method of O, wherein the stabilization wire control devicecomprises a handle portion configured to flexibly attach to proximalends of the stabilization wires.

Q. The method of P, wherein the handle portion is configured to allowindependent deployment of two or more of the stabilization wires.

R. The method of any of K-Q, wherein at least one of the stabilizationwires has a keyed relationship with a respective one of the plurality ofchannels.

S. The method of any of L-R, wherein attaching the stabilization wirescomprises automatically deflecting one or more of the stabilizationwires away from a center axis of the delivery device.

T. The method of any of K-S, wherein one or more of the stabilizationwires comprises a shape memory material.

U. The device of A-C, wherein the central longitudinal axis of theprimary lumen is collocated with the central longitudinal axis of thesheath portion.

Components of some or all of the devices described herein can beconstructed of biocompatible materials in order to facilitate long termand/or permanent deployment of the device within the body. For example,components can be lined with silver of some other antimicrobial liningto reduce the likelihood that biological material will be deposited onor in the device. In some embodiments, components of the devices can becoated with or constructed of bioabsorbable material. In someembodiments, components of the devices can be coated with porous Teflonto encourage tissue in-growth into the device.

Although this invention has been disclosed in the context of certainembodiments and examples, those skilled in the art will understand thatthe present invention extends beyond the specifically disclosedembodiments to other alternative embodiments and/or uses of theinvention and obvious modifications and equivalents thereof. Inaddition, while several variations of the invention have been shown anddescribed in detail, other modifications, which are within the scope ofthis invention, will be readily apparent to those of skill in the artbased upon this disclosure. It is also contemplated that variouscombinations or sub-combinations of the specific features and aspects ofthe embodiments may be made and still fall within the scope of theinvention. It should be understood that various features and aspects ofthe disclosed embodiments can be combined with, or substituted for, oneanother in order to form varying modes or embodiments of the disclosedinvention. Thus, it is intended that the scope of the present inventionherein disclosed should not be limited by the particular disclosedembodiments described above.

What is claimed is:
 1. A device for providing access to a nodule,lesion, or pathological area in a lung or other body organ or lumen, thedevice comprising: a sheath portion, the sheath portion having aproximal end and a distal end, the sheath portion comprising: a primarylumen that extends from the proximal end to the distal end; and aplurality of secondary lumens that extend from the proximal end to thedistal end; a plurality of stabilization wires, wherein at least one ofthe stabilization wires is configured to be slidably received within oneof the secondary lumens, wherein the length of the stabilization wiresis greater than the length of the secondary lumens; and a stabilizationwire control device configured to: flexibly attach to proximal ends ofthe stabilization wires; and allow independent deployment of one or moreof the stabilization wires.
 2. The device of claim 1, wherein theprimary lumen comprises a first diameter dimension, wherein the at leastone of the secondary lumen comprises a second diameter dimension,wherein the first diameter dimension is larger than the second diameterdimension.
 3. The device of claim 1, wherein the primary and secondarylumens include central longitudinal axes, wherein the centrallongitudinal axes of the second lumens are located further from acentral longitudinal axis of the sheath portion than the centrallongitudinal axis of the primary lumen.
 4. The device of claim 3,wherein the central longitudinal axis of the primary lumen is collocatedwith the central longitudinal axis of the sheath portion.
 5. The deviceof claim 1, wherein at least one of the stabilization wires is keyed toa predefined orientation within a respective one of the second lumens.6. The device of claim 1, wherein the stabilization wires are configuredto deflect away from a center axis of the sheath portion.
 7. The deviceof claim 6, wherein at least a portion of one or more of thestabilization wires comprises a shape memory material.
 8. The device ofclaim 6, wherein one or more of the stabilization wires comprises apiercing tip.
 9. A device comprising: a sheath portion, the sheathportion having a proximal end and a distal end, the sheath portioncomprising: a primary lumen that extends from the proximal end to thedistal end; and a plurality of secondary lumens that extend from theproximal end to the distal end; and a plurality of stabilization wiresslidably received within one of the secondary lumens, the stabilizationwires are configured to deflect away from a center axis of the sheathportion upon extending from the distal ends of the respective secondarylumens.